package com.song.shop.utils;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.nio.charset.Charset;

/**
 * @author Song Yinghui
 * @date 2018/10/10
 * @Version 1.0
 */
public class FastJsonRediSerializer<T> implements RedisSerializer<T> {

    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private Class<T> clazz ;
    public FastJsonRediSerializer(Class<T>  clazz) {
        super();
        this.clazz = clazz ;
    }

    @Override
    public byte[] serialize(T t) throws SerializationException {
        if (t == null) {
            return new byte[0];
        }
        return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    @Override
    public T deserialize(byte[] bytes) throws SerializationException {
        if (bytes == null || bytes.length < 0){
            return null ;
        }
        String s = new String(bytes, DEFAULT_CHARSET);
        return JSON.parseObject(s , clazz);
    }
}
